egidio,
You can simply download the stock tarballs for kde 3.0.2 from
the ftp.kde.org web site and build them. They all contain debian
subdirs. The core set have fully updated debian directories. Some
of the optional packages may have a slightly older debian directory
that potentially could need tweaks. However I know that the core
set like kdelibs and kdebase have up-to-date debian directories
and build/install fine straight from the tarball. Just untar, go
in the dir and do 'dpkg-buildpackage -rfakeroot' as root.
Jack